I have seen em bed all ways. Usually, atleast in my experience, the tend to bed with the wind at their backs. Of course anything can change that...
The land I hunt most is buck only(landowner preference) and I cannot count how many times I have had doe(s) bed in front of me. Solitary usually always put the wind to their back(use their nose to check behind em and scan everywhere else), while groups bed facing out in an almost circle. Of course...I have never let bucks bed down.. :D ..so Im not sure about them. Hope it helps....just my two cents.